Mrs Litvinenko,
speaking on the steps of the High Court today, called for the expulsion
of all Russian spies from London following the public inquiry

A
major review has today revealed how Russian spies killed the ex-KGB
dissident Alexander Litvinenko, a British citizen, by slipping
radioactive polonium 210 into his teapot at a Mayfair hotel in central
London in 2006.

His
widow Marina today declared her husband vindicated after a public
inquiry found Russian President Vladimir Putin 'probably' ordered his
assassination by FSB agents on the streets of London.

Linking
the state-sponsored assassination, which followed a long-running
personal feud between the two men, directly back to the President Putin
prompted Russia's ambassador to make accusations of a 'whitewash' by an
'incompetent' British state.

Alexander
Litvinenko, pictured shortly before his 2006 death, accused the Russian
president of implication in his killing while on his death bed in
London

Sir Robert's inquiry revealed the
teapot, pictured, into which the assassins placed the radioactive
material which killed Mr Litvinenko three weeks later. Sir Robert said
he was 'sure' the assassins had placed the material into the teapot
knowing it would kill Litvinenko

A
report by Chairman Sir Robert Owen today concluded Mr Putin 'probably'
approved the assassination. Revealing his findings, he was 'sure' placed
the polonium 'into the teapot'.

In his extraordinary 320 page report, Sir Robert found:

'The
chairman... found as a fact that both Vladimir Putin and Nikolai
Patrushev, director of the FSB at the time, personally approved the
assassination'

Marina Litvinenko, on the steps of the High Court today

Mr
Litvinenko died from acute radiation syndrome on November 23, three
weeks after drinking tea containing polonium 210 in the Pine Bar of the
Millennium Hotel in London on November 1 2006.

The former spy was deliberately poisoned by others - namely Andrei Lugovoi and Dmitri Kovtun.

The pair had tried to poison Mr Litvinenko almost a month earlier at a London office of multinational security company Erinys.

Mr
Lugovoi and Mr Kovtun were acting on behalf of others when they
poisoned Mr Litvinenko. They knew they were using a deadly poison, but
did not know precisely which chemical.

It
is a strong probability that Mr Lugovoi poisoned Mr Litvinenko under
the direction of Moscow's FSB intelligence service. Mr Kovtun was also
acting under FSB direction, possibly indirectly through Mr Lugovoi but
probably to his knowledge.

The
FSB operation to kill Mr Litvinenko was probably approved by then-FSB
chief Nikolai Patrushev and also by Russian President Vladimir Putin.

Following
the publication of report, Mrs Litvinenko said: 'The chairman found as a
fact and to a high degree of probability that the FSB directed
Mr Lugovoi and Mr Kovtun to murder Sasha and also found as a fact that
both Vladimir Putin and Nikolai Patrushev, director of the FSB at the
time, personally approved the assassination.'

She
told waiting journalists outside the High Court that Mr Cameron should
now expel all Russian agents from London and impose economic sanctions
on Russia.